British and Colonial Prop Clock

Interesting stuff.

I apologise if raising the issue of F2B’s has been an interesting diversion.

I suppose my questions should have been phrased as – given the orientation of the blades and the B&C markings – what aircraft was this prop used on ?

You’re correct CD, there were some left-handed Falcons made with the intention of fitting them in a twin (can’t remember which type they were intended for). This wasn’t followed through with and the left-handers ended up going on to some F.2b’s. The RAFM Brisfit has just such an engine/prop, although it’s a two-blader. Can’t recall ever seeing one with a left-handed four-blader.

Why on earth was a single aircraft type fitted with both right-handed and left-handed propellers for the same engine? Did some engines have reduction gears and some not?

Or were there right-handed and left-handed versions of the Falcon engine? I can’t think why that would be done unless they were intended to be used in pairs for a twin-engined aircraft (and then used in a F.2B instead)?

F.2B’s could be fitted with Falcons with even serial numbers which were Left handed and Right handed which were odd numbered, these being in the majority. The left hand props had a Blue band on each blade.

John